CN103014273A - Electric heating and slow-cooling device with heat treatment function - Google Patents
Electric heating and slow-cooling device with heat treatment function Download PDFInfo
- Publication number
- CN103014273A CN103014273A CN2013100147302A CN201310014730A CN103014273A CN 103014273 A CN103014273 A CN 103014273A CN 2013100147302 A CN2013100147302 A CN 2013100147302A CN 201310014730 A CN201310014730 A CN 201310014730A CN 103014273 A CN103014273 A CN 103014273A
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- electrically heated
- layer
- treatment function
- thermal treatment
- furnace wall
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- 238000005485 electric heating Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 title abstract description 15
- 238000010583 slow cooling Methods 0.000 title abstract description 9
- 238000009413 insulation Methods 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims description 53
- 239000010959 steel Substances 0.000 claims description 53
- 238000007669 thermal treatment Methods 0.000 claims description 26
- 238000000137 annealing Methods 0.000 claims description 20
- 229920000742 Cotton Polymers 0.000 claims description 12
- 210000001364 upper extremity Anatomy 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011819 refractory material Substances 0.000 description 6
- 238000009933 burial Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses an electric heating and slow-cooling device with a heat treatment function. The device comprises a furnace body and a furnace cover, wherein the furnace body consists of a furnace wall and a furnace bottom, and the furnace cover is arranged at the top of the furnace body in a covering manner; and a furnace wall insulation layer and an electric heating layer are sequentially arranged along the direction from the inner side of the furnace wall to the internal cavity of the furnace body. The device has a simple heat treatment function and the advantages of reasonable structural design, safety and convenience in operation, economical and practical performance, and good insulation effect.
Description
Technical field
The invention belongs to the metal heat treatmet field, particularly a kind of electrically heated annealing device with thermal treatment function, this device can be used for steel and steel billet thermal treatment and slow cooling thereof to be processed.
Background technology
Iron and steel is material most widely used in the mechanical industry, and microstructure of iron and steel is complicated, can be controlled by thermal treatment, so the thermal treatment of iron and steel is the main contents of metal heat treatmet.Some steel billet is before rolling, need to carry out slow cooling processes, some present steel mills adopt burial pit to carry out the slow cooling of steel billet, and the burial pit floor space is large, and investment is large, inconvenient operation, poor stability, steel billet are in temperature-fall period, and cooling rate is unbalanced, regional area does not have cooling-down effect, and the slow cooling effect is undesirable.When particularly the north of china in winter in situ temperature was low, the special steel of producing was owing to sharply cooling off, and interior tissue changes, and causes performance that variation has occured, and also can produce internal fissure when serious.Steel in the burial pit are exposed to and easily cause steel surface oxidation and decarburization in the air simultaneously, and then have affected the quality of steel.
Thermal treatment generally comprises heating, insulation and cooling three phases, and most burial pit only has insulation and refrigerating function.Although some adopts coal gas or combustion gas to heat, but heated by gas can not well be held Heating temperature, and Heating temperature is the very important processing parameter of thermal treatment process, the variation of temperature directly affects the generation of tissue, and selecting and controlling Heating temperature is the subject matter that guarantees thermal treatment quality.
Summary of the invention
The object of the invention is to overcome the defective of prior art, a kind of electrically heated annealing device with thermal treatment function is provided, its reasonable in design, easy-to-operate has simple and easy thermal treatment function and economical and practical, high insulating effect.
To achieve these goals, the present invention is by the following technical solutions:
A kind of electrically heated annealing device with thermal treatment function comprises the body of heater that is made of furnace wall and furnace bottom, and the bell that is covered on described body of heater top, is disposed with furnace wall thermal insulation layer and electric heating layer from the interior cavity direction of the described body of heater of interior side direction of described furnace wall.
Described bell can be made by quality steel plate, and described body of heater can be made by shaped steel and quality steel plate welding combination.The inboard furnace wall thermal insulation layer that arranges in described furnace wall can be individual layer, such as being made by insulating cotton or refractory materials; But also can be multilayer, such as the thermal insulation layer alternative arrangement of being made by insulating cotton and refractory materials respectively to form the multi-layer heat preserving layer.
The inboard electric heating layer that arranges in described furnace wall can be electrically heated steel plate layer or resistance wire layer.
As a kind of preferred implementation, at described furnace bottom the furnace bottom thermal insulation layer is set, and a plurality of electric heating layers that one or more heat-resisting concrete buttresses are set and kept apart respectively by described heat-resisting concrete buttress at this thermal insulation layer.Described heat-resisting concrete buttress is in order to isolating a plurality of electric heating layers, and can be used for supporting pending steel, and more preferably, the height of described heat-resisting concrete buttress is 35-45cm, can make so pending steel be in vacant state, is heated more even.The thermal insulation layer that arranges on the described furnace bottom can be individual layer, such as being made by insulating cotton or refractory materials; But also can be multilayer, such as the thermal insulation layer alternative arrangement of being made by insulating cotton and refractory materials respectively to form the multi-layer heat preserving layer.The thermal insulation layer that arranges on the thermal insulation layer that more preferably arranges on the furnace bottom and the furnace wall is identical, a plurality of electric heating layers on the described furnace bottom are identical with the electric heating layer of inboard, described furnace wall, electrically heated steel plate layer or resistance wire layer, when the thickness of the electrically heated steel plate layer on the furnace bottom is 3-7cm, more easily control its Heating temperature and rate of heating.
As a kind of preferred implementation, described bell inside is provided with covers inner thermal insulating layer, and described bell is provided with one or more breather holes, and an end of described breather hole is communicated with described lid inner thermal insulating layer, the other end is communicated with described body of heater inner chamber, and the bell of this structure can prevent its distortion.Described bell can cover on described body of heater by action of gravity, can promote by elevator.More preferably, described lid inner thermal insulating layer is the insulating cotton layer.
As a kind of preferred implementation, the electric heating layer of inboard, described furnace wall is that electricity adds the steel plate layer, and described electrically heated steel plate layer can accurately be controlled temperature in the stove by electrically heated, in order to more effective steel are heat-treated.More preferably, the thickness of described electrically heated steel plate layer is 3-7cm, the too thick or too thin control that all is unfavorable for Heating temperature and rate of heating of steel plate.
As a kind of preferred implementation, the upper limb of the inboard electrically heated steel plate layer that arranges in described furnace wall and the distance of described bell are 25-35cm, and the distance of lower rim and described furnace bottom is 25-35cm.Keep above-mentioned distance can guarantee suitable furnace inner space and avoid distance too near and cause the bell scaling loss.
As a kind of preferred implementation, the electric heating layer of described furnace wall that arrange on the described furnace bottom and close and the distance of described furnace wall are 13-17cm.Keep this distance can guarantee suitable furnace inner space and avoid distance too near and cause the furnace wall scaling loss.
As a kind of preferred implementation, described furnace wall thermal insulation layer is double insulation, is respectively insulating cotton layer and refractory masses.More preferably, the inner chamber of the more close described body of heater of described refractory masses, sidewall of the furnace body adopts the double-layer heat insulation material, and high insulating effect can prevent better that steel billet from sharply cooling phenomenon occuring.Simultaneously, described furnace bottom thermal insulation layer is refractory masses.
Above preferred implementation can merge arbitrarily or make up.
Can find out from technique scheme, the invention has the beneficial effects as follows:
Reasonable in design of the present invention, compare with imitative car type furnace or clock hood type furnace, cost is low, and floor space is little, easy to operate, long service life adopts electrically heated simultaneously but not Heating temperature and speed of cooling have effectively been controlled in the combustion type heating, make the interior temperature of burial pit more even, effectively guarantee the quality of steel billet finished product, improved the performance of enterprises, and reduced the pollution that causes because of combustion gas or heated by gas.
Description of drawings
Fig. 1 is the front view that the present invention has the electrically heated annealing device of thermal treatment function;
Fig. 2 is the furnace bottom electrically heated steel plate distribution plan of the electrically heated annealing device of the present invention with thermal treatment function;
Fig. 3 is the layout drawing of the furnace wall heating steel plate of the electrically heated annealing device of the present invention with thermal treatment function.
Wherein, description of reference numerals is as follows: 1, bell; 2, insulating cotton; 3, body of heater; 4, the first thermal insulation layer; 5, the second thermal insulation layer; 61, the electrically heated steel plate on the furnace wall; 62, the electrically heated steel plate of furnace bottom; 7, breather hole; 8, concrete buttress; 9, furnace bottom thermal insulation layer; 10, electric wire.
Embodiment
The present invention is described in detail below by embodiment.
A kind of electrically heated annealing device with thermal treatment function, as shown in Figure 1, it is long 7 meters, wide 4 meters, just to the illustrating of apparatus of the present invention, its specification can suitably be adjusted according to actual service condition for the electrically heated slow-cooling pit-type furnace of high 3 meters specifications, the device of above-mentioned specification, comprise body of heater 3 and the bell 1 of being located at body of heater 3 tops, wherein:
Body of heater 3 comprises furnace wall and furnace bottom, wherein:
On the furnace wall, interior cavity direction from the interior side direction body of heater of furnace wall is disposed with the first thermal insulation layer 4, the second thermal insulation layer 5 and electric heating layer, wherein, the first thermal insulation layer 4 adopts insulating cotton to make, the second thermal insulation layer 5 adopts refractory materials to make, electric heating layer on the furnace wall is electrically heated steel plate 61, is used for temperature in the control stove.In this embodiment, the thickness of the electrically heated steel plate 61 on this furnace wall is 5cm, and the distance of upper limb and bell is 30cm, and the distance of lower rim and furnace bottom is 30cm.Electrically heated steel plate 61 on this furnace wall is realized electrically heated effect by the electric wire 10 of being located on its base, referring to Fig. 3.
On furnace bottom, be provided with furnace bottom thermal insulation layer 9, identical with the structure of the second thermal insulation layer 5 on the furnace wall, made by refractory materials, and be provided with three microscler fire-resistant concrete buttresses 8 at this thermal insulation layer 9, it is 40cm highly, and referring to Fig. 1, these three concrete buttresses 8 have been divided into four zones with the thermal insulation layer 9 of furnace bottom, referring to Fig. 2, be respectively arranged with 62, three concrete buttresses 8 of four electrically heated steel plates in four zones the electrically heated steel plate 62 of four furnace bottoms is kept apart, and pending steel can be positioned on the concrete buttress 8.The distance of closing on the furnace wall with it near two steel plates of furnace wall in the electrically heated steel plate 62 of four furnace bottoms is 15cm.The electrically heated steel plate 62 of this furnace bottom is realized electrically heated effect by the electric wire 10 of being located at its limit section, referring to Fig. 2.
The annealing device of the present embodiment adopts the double-layer heat insulation material, and high insulating effect so that the steel billet Slow cooling can be controlled temperature by the electrically heated steel plate, has improved the final product quality of steel billet, provides the equipment basis for producing high-quality steel.
The use of above-mentioned annealing device is carried out according to following operation steps:
(1) behind the cleaning furnace inner space, closes bell;
(2) switch on electrically heated steel plate pre-heating temperature elevation to target temperature (if can not omit this step when not needing thermal treatment to be directly used in slow cooling);
(3) open bell, pending steel are hung in;
(4) suitable temp to be down to is opened bell, hangs out steel, closes bell.
Should be appreciated that above-described embodiment only is used for explanation the present invention but not is intended to limit protection scope of the present invention.In addition; also should understand; after having read technology contents of the present invention, those skilled in the art can make various changes, modification and/or modification to the present invention, and these all equivalent form of values fall within the protection domain that the application's appended claims limits equally.
Claims (10)
1. electrically heated annealing device with thermal treatment function, comprise the body of heater that is consisted of by furnace wall and furnace bottom, and the bell that is covered on described body of heater top, it is characterized in that, be disposed with furnace wall thermal insulation layer and electric heating layer from the interior cavity direction of the described body of heater of interior side direction of described furnace wall.
2. the electrically heated annealing device with thermal treatment function according to claim 1, it is characterized in that, be provided with the furnace bottom thermal insulation layer on the described furnace bottom, and a plurality of electric heating layers that are provided with one or more heat-resisting concrete buttresses and kept apart respectively by described heat-resisting concrete buttress at this furnace bottom thermal insulation layer.
3. the electrically heated annealing device with thermal treatment function according to claim 1, it is characterized in that, described bell inside is provided with covers inner thermal insulating layer, described bell is provided with one or more breather holes, one end of described breather hole is communicated with described lid inner thermal insulating layer, and the other end is communicated with described body of heater inner chamber.
4. the electrically heated annealing device with thermal treatment function according to claim 3 is characterized in that, described lid inner thermal insulating layer is the insulating cotton layer.
5. the electrically heated annealing device with thermal treatment function according to claim 1 and 2 is characterized in that, described electric heating layer is electrically heated steel plate layer or resistance wire layer.
6. the electrically heated annealing device with thermal treatment function according to claim 5 is characterized in that, the thickness of described electrically heated steel plate layer is 3-7cm.
7. the electrically heated annealing device with thermal treatment function according to claim 5, it is characterized in that, the upper limb of the inboard electrically heated steel plate layer that arranges in described furnace wall and the distance of described bell are 25-35cm, and the distance of lower rim and described furnace bottom is 25-35cm.
8. the electrically heated annealing device with thermal treatment function according to claim 5 is characterized in that, the electrically heated steel plate layer of described furnace wall that arrange on the described furnace bottom and close and the distance of described furnace wall are 13-17cm.
9. according to claim 2 or 8 described electrically heated annealing devices with thermal treatment function, it is characterized in that, the height of described heat-resisting concrete buttress is 35-45cm.
10. the electrically heated annealing device with thermal treatment function according to claim 2 is characterized in that, described furnace wall thermal insulation layer is double insulation, is respectively insulating cotton layer and refractory masses from the interior cavity direction of the described body of heater of interior side direction of described furnace wall; Described furnace bottom thermal insulation layer is refractory masses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014730.2A CN103014273B (en) | 2013-01-15 | 2013-01-15 | There is the electrically heated annealing device of thermal treatment function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014730.2A CN103014273B (en) | 2013-01-15 | 2013-01-15 | There is the electrically heated annealing device of thermal treatment function |
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| Publication Number | Publication Date |
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| CN103014273A true CN103014273A (en) | 2013-04-03 |
| CN103014273B CN103014273B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310014730.2A Expired - Fee Related CN103014273B (en) | 2013-01-15 | 2013-01-15 | There is the electrically heated annealing device of thermal treatment function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962710A (en) * | 2015-06-12 | 2015-10-07 | 江苏联峰能源装备有限公司 | Hot steel billet slow cooling insulated house |
| CN108344296A (en) * | 2018-04-19 | 2018-07-31 | 山东大洋钢管制造有限公司 | The efficient converter of seamless steel tube production |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2360420Y (en) * | 1998-12-18 | 2000-01-26 | 山东光明钨钼股份有限公司 | Well type mo wire annealing furnace |
| CN2811313Y (en) * | 2005-08-25 | 2006-08-30 | 河南科隆石化装备有限公司 | Stress-relieving annealing furnace for welding device |
| CN101748247A (en) * | 2008-12-09 | 2010-06-23 | 瓦房店金海轴承制造有限公司 | Energy-saving heat treatment well type heating furnace |
| CN203034054U (en) * | 2013-01-15 | 2013-07-03 | 莱芜钢铁集团有限公司 | Electric heating slow-cooling device with heat treatment function |
-
2013
- 2013-01-15 CN CN201310014730.2A patent/CN103014273B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2360420Y (en) * | 1998-12-18 | 2000-01-26 | 山东光明钨钼股份有限公司 | Well type mo wire annealing furnace |
| CN2811313Y (en) * | 2005-08-25 | 2006-08-30 | 河南科隆石化装备有限公司 | Stress-relieving annealing furnace for welding device |
| CN101748247A (en) * | 2008-12-09 | 2010-06-23 | 瓦房店金海轴承制造有限公司 | Energy-saving heat treatment well type heating furnace |
| CN203034054U (en) * | 2013-01-15 | 2013-07-03 | 莱芜钢铁集团有限公司 | Electric heating slow-cooling device with heat treatment function |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962710A (en) * | 2015-06-12 | 2015-10-07 | 江苏联峰能源装备有限公司 | Hot steel billet slow cooling insulated house |
| CN104962710B (en) * | 2015-06-12 | 2017-08-25 | 江苏联峰能源装备有限公司 | A kind of hot steel billet slow cooling insulated building |
| CN108344296A (en) * | 2018-04-19 | 2018-07-31 | 山东大洋钢管制造有限公司 | The efficient converter of seamless steel tube production |
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| Publication number | Publication date |
|---|---|
| CN103014273B (en) | 2016-03-02 |
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Granted publication date: 20160302 |
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